Dab tsi yog qhov zoo ntawm cov ntaub ntawv PP?
- Mar 01, 2018 -

Dab tsi yog qhov zoo ntawm cov ntaub ntawv PP?


1, polypropylene muaj cua kub tsis zoo, cov khoom yuav ua tau sterilized ntawm kub saum 100 degrees C, tsis muaj hwjchim sab nraud, thiab tsis muaj deformation ntawm 150. Qhov kev kub nyhiab yog -35 C, thiab tus brittleness yuav tshwm sim ntawm qis tshaj -35 C, thiab lub txias tsis kam yog tsis zoo li raws li ntawm polyethylene. Kev hloov ntawm polypropylene iav siab qhia txog qhov 18qC, OqC, 5 DEG C, qhov no yog vim cov neeg uas muaj kev sib txawv, uas muaj cov txheej txheem crystalline thiab cov txheej txheem sib txawv ntawm cov txheej txheem sib txawv, thiaj li hais tias yog qhov txawv ntawm qhov ntev ntawm cov yeeb yaj duab ntawm molecular saw. Melting qhov kub ntawm polypropylene ntau dua li 40% ntawm kwv yees li 164 polyethylene, 170 C, 100% isotactic polypropylene melting point of 176 DEG C

2, tshuaj lom neeg cov tshuaj ntawm cov tshuaj polypropylene zoo heev, ntxiv rau cov concentrated sulfuric acid thiab concentrated nitric acid yaig, muaj zog nyob hauv ntau hom tshuaj lwm cov tshuaj reagents; tab sis tsis muaj molecular phaus aliphatic hydrocarbons, cov ntxhuav hydrocarbons thiab chlorinated hydrocarbons yuav ua rau polypropylene softening thiab o, thaum nws cov tshuaj stability nrog nce ntawm crystallinity ntau zog. Nws yog tsim rau ua ntau yam tshuaj polpropylene kav thiab fittings, zoo anticorrosion effect.


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